AUGMENTATION OF AMBIENT TEMPERATURE AND FREE CONVECTION EFFECTS IN THERMAL CIRCUIT BREAKER TRIP CURVE APPROXIMATIONS

摘要

An electrical overload protection system may be based on a solid state control system. A solid state switch may open responsively to commands for a solid-state controller. The controller may perform calculations to determine accumulated energy in a protected conductor. The calculations may be based, in part, on samplings of current in the protected conductor and ambient temperature to which the conductor may be exposed.